Muhlenbergia huegelii Trin.

This species is locally found in mountainous regions along shaded streams.

Distinguished from Muhlenbergia duthieana by its loose panicle and very short glumes. It is a taller, more robust species than either Muhlenbergia duthieana or Muhlenbergia himalayensis and differs from the latter also by its broader leaves, shorter glumes and, in most cases, absence of stolons. 1600-3000 m.

Culm erect, with stolon. Blade linear, 9-10 cm long by 3 mm wide; ligule chartaceous, about 2.4 mm long, truncate, upper part minutely ciliate. Inflorescence a contracted panicle, about 13 cm long. Spikelets 1-flowered, about 2 mm long; glumes chartaceous, nerveless; the lower glumes about 2.6 mm long, lanceolate, irregular-ciliated at apex; the upper glume about 0.8 mm long, ovate-lanceolate; lemma about 2 mm long, chartaceous, lanceolate, basal margin bearded, : 3-nerved, tipped with a long awn of about 8 mm long; palea chartaceous, lanceolate-keeled, as long as the lemma, basal part bearded.

Plants usually with long, scaly rhizomes. Culms erect, 70–90 cm tall, rigid, puberulent below nodes. Leaf sheaths loose, glabrous, usually shorter than internodes; leaf blades 4–14 × 0.4–1 cm, flat, scabrid on both surfaces and margins, apex acuminate; ligule ca. 1 mm, glabrous or ciliate. Panicle 8–27 cm, rather open, sometimes nodding; branches few to many at each node, branches and pedicels all slender, scabrid. Spikelets lanceolate, 2–3 mm, gray-green or purplish; glumes 0.5–1.2 mm with lower glume slightly shorter than the upper, hyaline, veinless or upper glume 1-veined, apex obtuse; lemma 2–3 mm, gray-green or purple, scaberulous, lower 1/4 of back pilose; awn 8–16 mm. Anthers ca. 0.8 mm. Fl. and fr. Jul–Oct. 2n = 40, 42.

Rhizomatous perennial; culms 30-115 cm high, ascending from a decumbent base, only rarely rooting from the lower nodes. Leaf-blades 7-26 cm long, 2-7 mm wide, scabrid; ligule c. 1 mm long, obtuse. Panicle 1040 cm long, nodding, loose, the spikelets not or only slightly clustered on the rather long flexuous primary branches. Spikelets 2-3.3 mm long; glumes subequal, 13-2.2 mm long, elliptic, acute or obtuse, the lower usually a little shorter than the upper and sometimes nerveless, rarely the upper also nerveless; lemma as long as the spikelet, hairy in the lower part, minutely notched at the tip and bearing a fine awn 8-20 mm long.

N. & N.E. India to China, Korea, Japan, Philippines.

Distributed in China, Korea, Manchuria and Japan.

Anhui, Fujian, Gansu, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Jiangsu, Jiangxi, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Xinjiang, Xizang, Yunnan, Zhejiang [Afghanistan, Bhutan, India, Japan, Korea, Nepal, Pakistan, Philippines, Russia].

Distribution: Pakistan (Punjab, N.W.F.P., Gilgit & Kashmir): Afghanistan; Himalayas.

2100-2300 m

Fl. & Fr. Per.: July-August.

Moist places in mountain valleys, riversides, forests; 900–3000 m.

Muhlenbergia longistolon Ohwi, Bull. Nat Sci Museum (Tokyo) 26:3. 1949; Hsu, Taiwnia 16: 264. 1971, Taiwan Grass. 437. pl. 114. 1975; Hsu, Fl. Taiwan 5: 498. 1978.
Muhlenbergia arisanensis Hayata, Icon. Pl. Form. 7: 87. 1918; Ohwi, Bot. Mag. Tokyo 55: 396. 1941.

Muhlenbergia arisanensis Hayata; M. geniculata Nees ex Steudel; M. longistolon Ohwi; M. viridissima Nees ex Steudel.